BR9806518B1 - processos para obter e acessar uma portadora de gravação óptica protegida contra cópia, e, portadora de gravação óptica carregando informação em diferentes blocos. - Google Patents

processos para obter e acessar uma portadora de gravação óptica protegida contra cópia, e, portadora de gravação óptica carregando informação em diferentes blocos. Download PDF

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Publication number
BR9806518B1
BR9806518B1 BRPI9806518-1A BR9806518A BR9806518B1 BR 9806518 B1 BR9806518 B1 BR 9806518B1 BR 9806518 A BR9806518 A BR 9806518A BR 9806518 B1 BR9806518 B1 BR 9806518B1
Authority
BR
Brazil
Prior art keywords
subcode
data
recording carrier
information
fields
Prior art date
Application number
BRPI9806518-1A
Other languages
English (en)
Portuguese (pt)
Other versions
BR9806518A (pt
Inventor
Reinhard Blaukovitsch
Andreas Winter
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed filed Critical
Publication of BR9806518A publication Critical patent/BR9806518A/pt
Publication of BR9806518B1 publication Critical patent/BR9806518B1/pt

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Classifications

    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B20/00—Signal processing not specific to the method of recording or reproducing; Circuits therefor
    • G11B20/00086—Circuits for prevention of unauthorised reproduction or copying, e.g. piracy
    • G11B20/0021—Circuits for prevention of unauthorised reproduction or copying, e.g. piracy involving encryption or decryption of contents recorded on or reproduced from a record carrier
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B20/00—Signal processing not specific to the method of recording or reproducing; Circuits therefor
    • G11B20/00086—Circuits for prevention of unauthorised reproduction or copying, e.g. piracy
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B20/00—Signal processing not specific to the method of recording or reproducing; Circuits therefor
    • G11B20/00086—Circuits for prevention of unauthorised reproduction or copying, e.g. piracy
    • G11B20/00094—Circuits for prevention of unauthorised reproduction or copying, e.g. piracy involving measures which result in a restriction to authorised record carriers
    • G11B20/00123—Circuits for prevention of unauthorised reproduction or copying, e.g. piracy involving measures which result in a restriction to authorised record carriers the record carrier being identified by recognising some of its unique characteristics, e.g. a unique defect pattern serving as a physical signature of the record carrier
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B20/00—Signal processing not specific to the method of recording or reproducing; Circuits therefor
    • G11B20/00086—Circuits for prevention of unauthorised reproduction or copying, e.g. piracy
    • G11B20/0021—Circuits for prevention of unauthorised reproduction or copying, e.g. piracy involving encryption or decryption of contents recorded on or reproduced from a record carrier
    • G11B20/00217—Circuits for prevention of unauthorised reproduction or copying, e.g. piracy involving encryption or decryption of contents recorded on or reproduced from a record carrier the cryptographic key used for encryption and/or decryption of contents recorded on or reproduced from the record carrier being read from a specific source
    • G11B20/00253—Circuits for prevention of unauthorised reproduction or copying, e.g. piracy involving encryption or decryption of contents recorded on or reproduced from a record carrier the cryptographic key used for encryption and/or decryption of contents recorded on or reproduced from the record carrier being read from a specific source wherein the key is stored on the record carrier
    • G11B20/00391—Circuits for prevention of unauthorised reproduction or copying, e.g. piracy involving encryption or decryption of contents recorded on or reproduced from a record carrier the cryptographic key used for encryption and/or decryption of contents recorded on or reproduced from the record carrier being read from a specific source wherein the key is stored on the record carrier the key being stored in subcodes, e.g. in the Q subcode of a CD
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B20/00—Signal processing not specific to the method of recording or reproducing; Circuits therefor
    • G11B20/00086—Circuits for prevention of unauthorised reproduction or copying, e.g. piracy
    • G11B20/00572—Circuits for prevention of unauthorised reproduction or copying, e.g. piracy involving measures which change the format of the recording medium
    • G11B20/00615—Circuits for prevention of unauthorised reproduction or copying, e.g. piracy involving measures which change the format of the recording medium said format change concerning the logical format of the recording medium, e.g. the structure of sectors, blocks, or frames
    • G11B20/0063—Circuits for prevention of unauthorised reproduction or copying, e.g. piracy involving measures which change the format of the recording medium said format change concerning the logical format of the recording medium, e.g. the structure of sectors, blocks, or frames wherein the modification to the logical format mainly concerns management data, e.g., by changing the format of the TOC or the subcode
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B20/00—Signal processing not specific to the method of recording or reproducing; Circuits therefor
    • G11B20/00086—Circuits for prevention of unauthorised reproduction or copying, e.g. piracy
    • G11B20/0071—Circuits for prevention of unauthorised reproduction or copying, e.g. piracy involving a purchase action
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F2211/00—Indexing scheme relating to details of data-processing equipment not covered by groups G06F3/00 - G06F13/00
    • G06F2211/007—Encryption, En-/decode, En-/decipher, En-/decypher, Scramble, (De-)compress
BRPI9806518-1A 1997-08-28 1998-08-26 processos para obter e acessar uma portadora de gravação óptica protegida contra cópia, e, portadora de gravação óptica carregando informação em diferentes blocos. BR9806518B1 (pt)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP97114927A EP0899733B1 (en) 1997-08-28 1997-08-28 Optical disc copy management system

Publications (2)

Publication Number Publication Date
BR9806518A BR9806518A (pt) 2001-03-13
BR9806518B1 true BR9806518B1 (pt) 2011-01-11

Family

ID=8227283

Family Applications (1)

Application Number Title Priority Date Filing Date
BRPI9806518-1A BR9806518B1 (pt) 1997-08-28 1998-08-26 processos para obter e acessar uma portadora de gravação óptica protegida contra cópia, e, portadora de gravação óptica carregando informação em diferentes blocos.

Country Status (14)

Country Link
US (1) US6535858B1 (ru)
EP (1) EP0899733B1 (ru)
JP (1) JPH11250512A (ru)
KR (1) KR100583906B1 (ru)
CN (1) CN1132175C (ru)
AT (1) ATE199990T1 (ru)
AU (1) AU750499B2 (ru)
BR (1) BR9806518B1 (ru)
CA (1) CA2245232C (ru)
DE (1) DE69704352T2 (ru)
ES (1) ES2155230T3 (ru)
RU (1) RU2229172C2 (ru)
SG (1) SG71803A1 (ru)
TW (1) TW374900B (ru)

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Also Published As

Publication number Publication date
CA2245232A1 (en) 1999-02-28
ES2155230T3 (es) 2001-05-01
BR9806518A (pt) 2001-03-13
EP0899733A1 (en) 1999-03-03
JPH11250512A (ja) 1999-09-17
EP0899733B1 (en) 2001-03-21
KR100583906B1 (ko) 2006-09-06
DE69704352D1 (de) 2001-04-26
DE69704352T2 (de) 2001-07-12
AU750499B2 (en) 2002-07-18
RU2229172C2 (ru) 2004-05-20
KR19990023961A (ko) 1999-03-25
TW374900B (en) 1999-11-21
CN1132175C (zh) 2003-12-24
ATE199990T1 (de) 2001-04-15
SG71803A1 (en) 2000-04-18
US6535858B1 (en) 2003-03-18
CN1219728A (zh) 1999-06-16
AU8194998A (en) 1999-03-11
CA2245232C (en) 2007-01-23

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